Technical Overview
As an ISO/IEC 17025 accredited laboratory with CNAS recognition, we provide comprehensive testing solutions for the automotive industry. Our New Energy Vehicle Key Special Project Research Testing Completion Service supports manufacturers and suppliers in validating product safety, performance, and regulatory compliance. With advanced testing equipment and a team of experienced engineers, we deliver accurate and reliable data that meets the stringent requirements of global markets, ensuring your products achieve seamless market access.
Product Samples We Regularly Test
Our laboratory accepts a wide range of samples from new energy vehicle supply chains. Typical product samples submitted for testing include:
- Lithium-ion Battery Cells: Cylindrical, prismatic, and pouch cells for EV power batteries.
- Battery Modules and Packs: High-voltage battery assemblies for passenger and commercial vehicles.
- Drive Motors and Controllers: Permanent magnet synchronous motors and motor control units.
- On-Board Chargers (OBC): AC/DC charging modules integrated within vehicles.
- DC-DC Converters: Power conversion units for low-voltage auxiliary systems.
- Charging Cables and Connectors: Charging inlets, plugs, and high-voltage cables.
- Fuel Cell Stacks: Proton exchange membrane fuel cell modules for hydrogen vehicles.
New Energy Vehicle Key Special Project Research Testing Completion Service for Power Batteries
Power batteries are the core component of electric vehicles. Our testing covers safety, performance, and environmental adaptability based on international and regional standards.
- Electrical Performance Testing: We conduct capacity and energy tests at various charge/discharge rates (0.1C to 3C) according to GB/T 31484 and ISO 12405-4. Key parameters include specific energy, energy density, and capacity retention rate.
- Cycle Life Assessment: Long-term durability is evaluated under standard charging and discharging conditions per GB/T 31484 and IEC 62660-2, providing data on capacity decay and cycle numbers.
- Safety Abuse Testing: We simulate extreme conditions including overcharge, short circuit, and mechanical crush in accordance with UN38.3 and GB/T 31485. Parameters monitored include maximum temperature rise and voltage limits.
- Thermal Runaway Propagation: Following GB 38031-2020 and SAE J2464, we verify whether thermal runaway in a single cell propagates to the entire pack, ensuring passenger safety.
- Environmental Reliability: Temperature cycling (-40°C to +85°C), vibration, and shock tests are performed per GB/T 31486 and ISO 16750-3 to validate structural integrity under road conditions.
Electric Drive System Testing Services
The electric drive system determines vehicle efficiency and driving experience. We offer detailed characterization for motors and controllers.
- Motor Performance Mapping: We measure torque-speed characteristics, peak power, and continuous power under different voltage levels according to GB/T 18488.2 and ISO 19453. Efficiency maps are generated to optimize system design.
- Temperature Rise and Thermal Protection: Continuous operation tests monitor winding temperatures and housing temperatures per IEC 60034-1, ensuring the motor operates within safe thermal limits.
- Regenerative Braking Testing: We evaluate the energy recovery efficiency and response time during deceleration phases in accordance with GB/T 18386.
- Electromagnetic Compatibility (EMC): Radiated and conducted emissions are tested per CISPR 25 and GB/T 18655, while immunity tests follow ISO 11452-2 to ensure the drive system does not interfere with other vehicle electronics.
- NVH Analysis: Noise, vibration, and harshness levels are measured during operation to meet GB/T 1859 requirements for cabin comfort.
Charging Infrastructure Component Testing
Safe and efficient charging is essential for NEV adoption. Our services cover charging interfaces and power electronics.
- Connector Safety and Durability: We perform insertion/extraction force tests, impact resistance, and high-voltage withstand tests on charging plugs and sockets per GB/T 20234 and IEC 62196-3.
- On-Board Charger Efficiency: Efficiency and power factor are measured across the full input voltage range (85V-265V) according to GB/T 34014 and SAE J2894.
- Communication Protocol Conformance: We verify CAN bus and PLC communication signals between vehicle and charger following ISO 15118 and GB/T 27930, ensuring successful charging handshakes.
- Protection Degree (IP Rating): Ingress protection tests for dust and water resistance are conducted per IEC 60529, verifying IP67 or IP69K ratings for outdoor charging components.
- DC-DC Converter Testing: Output voltage stability, ripple noise, and conversion efficiency are evaluated under dynamic load conditions per QC/T 895.
Fuel Cell System Testing Capabilities
For hydrogen fuel cell vehicles, we provide specialized testing to address unique safety and performance requirements.
- Stack Performance Testing: Polarization curves, power density, and hydrogen utilization rates are measured under various operating pressures and humidification levels per GB/T 28816 and ISO 23273.
- Hydrogen Safety Testing: Leak detection, pressure relief device activation, and hydrogen embrittlement assessments are conducted following GB/T 26991 and SAE J2579.
- Cold Start Capability: We evaluate start-up time and performance degradation at sub-zero temperatures (-30°C) in accordance with GB/T 44136.
- Durability and Accelerated Aging: Long-term operation tests simulate thousands of driving cycles to predict stack lifetime per DOE protocols.
Report Recognition and Compliance
All testing activities for the New Energy Vehicle Key Special Project Research Testing Completion Service are conducted within our ISO/IEC 17025 accredited scope. Our CNAS-endorsed test reports are recognized by regulatory authorities and certification bodies in major automotive markets, including China (MIIT, CQC), the European Union (UNECE, NBs), and North America (EPA, CARB). We ensure that test data meets the specific data package requirements for type approval, subsidy eligibility, and R&D validation, providing manufacturers with a trusted pathway to global compliance.
